baber/WOPTO huggingface dataset:
Patent GB-612322-A (GB)
Title: Improvements in or relating to process and apparatus for the production of high concentration caustic lyes from the decomposition of amalgams
IPC: F16F9/04
Filed: 1945-12-19
Abstract: <PICT:0612322/III/1> In the production of caustic alkali lyes by the countercurrent flow of water with alkali amalgam to produce a lye of gradually increasing concentration, the heat absorbed by the mercury is used to vaporize part of the water present to produce steam which is condensed into the lye of higher concentration to raise the temperature thereof and thereby promote decomposition of the amalgam. In a preferred embodiment, water from a hydrogen cooler D enters compartment C of a decomposition cell and circulates between trays in countercurrent flow to hot mercury coming from compartment B through a hydraulic seal 6; the hot water and steam thus produced enter compartment B through a non-return valve 4 and decompose the amalgam in the mercury issuing from A through seal 5.  The heat of reaction in B causes boiling of the lye which together with hydrogen and steam produced in B and C enters compartment A (through valve 3) wherein lye of maximum concentration is produced by partial decomposition of amalgam entering through pipe 7.  Hot alkali lye may issue from outlet 9 in the form of monohydrate or at even higher concentrations of alkali hydroxide, while hydrogen is separated at D from mercury and water which may be returned to the cell.  Compartments A and B may carry charges of a catalyst, e.g. graphite and metal alloys, or a stack of decomposition rods.  The process may be carried out at a pressure above atmospheric, and extraneous steam may be introduced at E.
Patent GB-1184017-A (GB)
Title: Liquid Photographic Silver Halide Developer Concentrate
IPC: G03C5/305
Filed: 1968-07-19
Abstract: 1,184,017. Photographic silver halide developer concentrate. AGFA-GEVAERT A.G. July 19, 1968 [July 22, 1967], No.34487/68. Heading G2C. An aqueous photographic developer concentrate contains per litre:- K 2 CO 3  150-300g. KOH 10-30g. K 2 SO 3  200-300g. KBr 15-30g. Hydroquinone 30-50g. A 3-aminopyrazoline 1 - 3g. A polyhydric aliphatic alcohol 50-200g. The specified aminopyrazoline is 1-p-aminophenyl- 3-amlnopyrazoline and specified alcohols are ethylene glycol, diethylene glycol and glycerol. The concentrate has superior keeping qualities.
Patent GB-212331-A (GB)
Title: Improvements in and relating to the production of metal blanks
IPC: B21J1/02
Filed: 1922-12-18
Abstract: 212,331. McConway, W. Dec. 18, 1922. Hoops and rings.-A. cast metal annulus which may be made as described in Specification 15591/15, [Class 83 (i), Casting &c. metals], is treated so as to remove impure metal and render the blank suitable for rolling operations in tyre mills &c. The annulus is first pressed so as to cause the walls 4 of the opening to bulge inwardly and the opening is then broached to remove the impure metal originally disposed in the walls. The pressing operation may be performed in selfcentering cup dies 6 which reduce the blank to the form shown in Fig. 3. The impure metal 4 is then removed by a broach 10 after which the blank may be removed from the dies and pressed without further heating between plates 12, 13 to a form suitable for further operation in a tyre mill. In a modification, in cases where the annuli differ considerably from the standard weight, the annulus after pressing between cup dies is further pressed between plates 15, 16 in a ring die 14, Fig. 10, which trims off any flash 17 formed by the first pressing operation. The upper plate 15 is then removed and the broach 10 centred by means of a, spider 18 provided with pivoted levers 19 which grip the broach and with pins 20 engaging holes in the die. The ring die is slightly tapered to facilitate removal of the blank and is centred on the bottom plate by means of lugs 23. After broaching the blank may be further pressed as above described between plates 15, 16. These processes may be carried out in the hydraulically operated machine shown in Figs. 18 and 19. The upper platen of the press is moved downwardly by the main cylinder 24 and is returned by cylinders 29 whose pistons are connected by yokes 31, the movements being guided by vertical columns 34. The lower platen supports a transverse slide 35 actuated by a hydraulic cylinder 40 and carrying a cup die 6 and pressure plate 36 either of which may be positioned beneath the main cylinder. An opening 43 in the slide registers with an opening 44 in the table during the broaching operation and enables chips to pass into a scrap box (not shown). When a ring die is employed the work may be stripped from the die by a hydraulic piston 46. The upper platen is also provided with a hydraulically operated slide 37 on which are mounted the upper cup die 6, pressure plate 37 and broaching tool 10. In a modification one hydraulic press may perform the initial pressing in cup dies, the blank being then transferred to a second press carrying the ring die pressure plates and broaching-tool. Specification 7384/11, [Class 83 (i), Casting &c. metals], also is referred to.
Patent GB-301316-A (GB)
Title: Press-buttons
IPC: A44B17/00
Filed: 1928-11-24
Abstract: 301,316. Rarrel, A. Nov. 26, 1927, [Convention date]. Press-button fasteners.-The socket comprises an inner member 1 housing springs 5 adapted to engage a groove 7<a> in the stud 7, and an outer member 2 rotatable on member 1 and having pins 4 extending through slots 3 in member 1 into the path of the free ends of the springs 5. Rotation of member 2 clockwise causes the pins 4 to engage the springs and move them out of groove 7<a> to release the stud. Member 1 is suitably secured to the fabric 9 and the stud member 7 to fabric 8.
Patent GB-423628-A (GB)
Title: Improvements in and relating to emergency doors for buses
IPC: B60J9/02
Filed: 1933-12-09
Abstract: 423,628. Vehicle emergency-exits; fastenings. SHAW, F., Sunny Bank, Church Road, Denshaw, Yorkshire, and BROWN, F., Templestowe, Buxton Road, Stockport. Dec. 9, 1933, No. 34690. [Class 108 (i)] [See also Group XXV] An emergency-door 4 for buses is pivotally mounted at its lower edge at the rear of the vehicle so that when released it swings downwardly and forms a sloping platform to the ground, the door normally being held in place by a plurality of spring-actuated bolts 11, 12 all of which are released simultaneously by one operation of a controlling mechanism. The bolts pass through corresponding apertures in the top and in the upper portion of each side of the door and door-frame 9 and are retractable by rotation of a shaft 16 to which are fixed forked levers 15 engaging the top bolts 12 and to which are connected links 19 actuating bell-cranks 18, 15 operating the side - bolts 11. The shaft 16 is rotated by a lever 22 which may be pulled at one end by a rod 25 and at the other end by a link 24 and chain 23 which passes to the driver's seat through a tube running along both sides of the vehicle and open at intervals to permit operation at several places. Levers 28 fixed to the shaft force the door outwardly from the frame as the bolts are retracted. In order to cover the space between the edge of the vehicle floor 8 and the hinged edge of the door when lowered, an apron 30, preferably of metal or fire-resisting material, is mounted on a spring-roller 31 beneath the floor and passes upwards through a slot 32 and is fastened at 33 to the door. Springs may be provided to check the downward swing of the door and wheels 34, preferably spring-mounted, may be fixed thereto.
Patent GB-845602-A (GB)
Title: Liquid fuel vaporising apparatus
IPC: F23D11/44
Filed: 1957-11-07
Abstract: 845,602. Controlling liquid levels. NANNINGA, A. R. Nov. 7, 1957, No. 34714/57. Class 123(1) [Also in Group XI] The level of fuel in a fuel vaporizer 7 is main-. tained at the dotted line by a flow of fuel from a reservoir 3 through a pipe 6 and by a flow of air from the vaporizer 7 to the top of the reservoir 3 through a relief tube 12. The reservoir 3 has two cylinders 4, 5 extending from its upper surface, the smaller one 5 serving as a filling inlet and having a closure 20 carrying a pin 19 which opens a spring closed valve 16 in the pipe 6 leading to the vaporizer when the closure 20 is in position, the larger one 4 having a closed upper end and being connected by the relief tube 12 to the vaporizer and being also connected by two pipes 2, 9 to a fuel tank 1. The level of the fuel in the reservoir 3 is indicated by a rod 22 freely movable in a downwardly extending tube 10 and connected to a float 23. The quantity of fuel in the small cylinder 5 is reduced by making the part of the pin 19 located therein of large volume.
Patent GB-1070854-A (GB)
Title: Lamp flashing circuit
IPC: B60Q11/00
Filed: 1964-08-25
Abstract: 1,070,854. Road traffic signals on vehicles; lamp failure alarms. TUNG-SOL INDUSTRIES Inc. Aug. 25, 1964 [Aug. 27, 1963], No. 34757/64. Headings G4N and G4Q. A flasher circuit for vehicle signal lamps comprises a flasher unit in series with a reed relay, the lamps being connected in the energizing circuit of the relay so that if one of them is defective the relay will not operate and the lamps will not flash. In Fig. 2, a snapswitch 2 has a movable member which connects to contact 10 if an expansible wire 14 is cold and to a contact 8 if the wire is heated by a surrounding heater 20. When a switch S is closed a circuit is completed through contact 10 and the relay coil 34 to the signal lamps 46 and pilot lamp 48. The reed relay is adjusted so that it will not operate unless all the lamps light, in which case its contacts 36 and 38 close and energize the heater 20 to cause flashing; consequently the pilot lamp 48 will flash if the signal lamps are working and will glow steadily if one of the lamps has failed. In a modification' Fig. 3 (not shown), terminal 8 is connected to terminal 28 and a further lamp load is connected between terminal 28 and earth so that the two lamp loads flash alternately as the switch 2 makes connection to contacts 10 and 8. In a further modification. Fig. 5, the circuit includes a second relay 56 with normally closed contacts 70. When switch S is closed the lamps 46 light and energize relay 30 the contacts of which close and energize the heater 20; the pilot lamp 48 does not light because it is in series with heater 20. When the thermal switch changes over to contact 8 the relay 56 is energized and breaks the circuit to signal lamps 46, and the current through the relay is sufficient to light the pilot lamp 48.
Patent GB-1125927-A (GB)
Title: Body of semiconductor material for useas a solar cell and method for preparing said body
IPC: H01L23/29
Filed: 1966-08-03
Abstract: 1,125,927. Surface layer of silica or borosilicate. WESTINGHOUSE ELECTRIC CORP. 3 Aug., 1966 [9 Aug., 1965], No. 34761/66. Heading C1A. [Also in Division H1] A siliceous layer is formed on a silicon body by heating the body to 600-1000‹ C. in the presence of O 2 , H 2 , and SiHx<SP>1</SP>/ 4 -x (where x = 0-4 and Y is Cl, Br or I). An epitaxial layer of quartz is-formed above 770‹ C. but below 730‹ C. an amorphous silica layer is formed. It is preferred to add B 2 H 6  to the reactants below 730‹ C. to form a layer of borosilicate glass.
Patent GB-776919-A (GB)
Title: Mould-forming machine
IPC: B22C23/00
Filed: 1955-12-05
Abstract: 776,919. Moulding-machines. VALYI, E. I. Dec. 5, 1955, No. 34862/55. Class 83 (1). A shell-moulding machine comprises a pattern-carrier having a pattern mounted facedown thereon, means for heating the pattern, a mould-mix container having a top enclosuremeans to enclose the space below said pattern, means forming a number of passages in said space below the pattern. and means for applying fluid-pressure to the mould mixture in said container for raising the mix through said passages into contact with said pattern for forming a shell thereon. The pattern 9 on the carrier 4 normally seats on the edge of a hot-air manifold 7. The mix container 6 is vertically reciprocable on a table 27 by a piston rod 30, into and out of sealing engagement with the manifold 7, and mould-mix may be blown from the container through riser-tubes 34, Fig. 3, under the influence of air from an intake 36. The container also comprises a blow-plate 37. A support 8 having spring-loaded support-pins 49 is movable on wheels 39 into the space between the pattern and the retracted container, and may then be moved upwardly by the container to support the formed and partially-cured shell 38 during its curing by hot air from the manifold. Thereafter the support 8 is lowered by the container 6 and simultaneously the mould is ejected from the pattern by pins 26 carried by an ejector plate 5 operated by a cylinder 21, and removed by the support 8. After removal of the shell from the support, the latter may be repositioned under the pattern 9, and a pattern-cleaning and parting solution is supplied through a spray on the support, from a tank 55. If necessary the pattern is then reheated by hot air from the manifold before removal of the support 8 and commencement of the next moulding-cycle. The pattern-carrier may be moved upwardly, e.g. to change patterns, by locking it to the ejector piston rod 19 by a pin.
Patent GB-760953-A (GB)
Title: Improvements in or relating to endless belts and method of manufacturing same
IPC: F16G5/06
Filed: 1953-12-15
Abstract: 760,953. Laminated articles. DAYTON RUBBER CO. Dec. 15, 1953 [Dec. 23, 1952], No. 34884/53. Class 140. [Also in Group XXIV] Endless V - belts are made by winding in succession on a mandrel 17, a tension section 19 of one or more layers of rubberized fabric, a neutral axis section 20 of helically-wound, inextensible cord, and a layer of rubber composition 21, the resulting sleeve being placed under compression, e.g. by winding a cloth wrapper thereon under tension, vulcanized, and, after removal of the wrapper, cut along lines 22 to form trapezoidal-section rings 23, which are turned inside-out to form V- belts. The mandrel may have a highly-polished metal or plastic surface. The rubber layer may contain embedded fibres, which may extend transversely of the belt. Cushioning rubber layers may be provided on either side of the neutral axis section. Cogged belts may be made by moulding the outer rubber layer of the sleeve, which will form the inner layer of the belt, in contact with a toothed matrix, e.g. of hard rubber coated with a mould-release material. The toothed matrix is allowed to remain until after the cutting operation. Where several layers of rubberized fabric are employed, successive layers may be wound with decreasing or increasing tension.
Patent GB-1026324-A (GB)
Title: Prestressed roller bearing
IPC: F16C33/58
Filed: 1963-09-04
Abstract: 1,026,324. Bearings. TORRINGTON CO. Sept. 4, 1963 [Sept. 25, 1962], No. 34885/63. Heading F2A. In a roller bearing having cylindrical rollers, the inner, outer or both inner and outer races have a resilient portion of concave-convex longitudinal section, the centre of which bears on the rollers so that they are pre-stressed thereby. In an embodiment, an outer race 12 which is made of sheet metal, for example, has inwardly-directed flanges 13 which retain rollers 10 and prevent escape of lubricant, is mounted in a housing 8 and pre-stresses rollers 10 which may have tapered end-portions 11. A cage may be provided for the rollers, the cage comprising end-rings and bars, the latter having their centre portions off-set so that the rollers are engaged adjacent their ends only and so that the rollers are prevented from being displaced inwardly. In a modification, the outer race 22, Fig. 4 (not shown) has inwardlydirected end-flanges 23 and a cage 24, the bars 26 of which are offset so as to retain the rollers when the shaft is not present. In another modification, the outer sleeve has no endflanges and the inner race serves as a shaft.
Patent GB-762448-A (GB)
Title: A process for the production of aromatic carboxylic acids
Filed: 1954-12-02
Abstract: Sodium salts of aromatic carboxylic acids are prepared by heating a sodium salt of an aromatic dicarboxylic acid capable of forming an internal anhydride, at a temperature above 350 DEG  C. while in a dry condition.  Catalysts may be present.  The free acid may be liberated from the salt thus obtained.  Salts specified are disodium phthalate which yields the sodium salts of terephthalic, benzoic and trimesic acids; and sodium salts of the chloro-phthalic acids, the methyl-phthalic acids, naphthalene 1 : 2-dicarboxylic acid, naphthalic acid and diphenic acid which yield the sodium salts of chloroterephthalic acid, methyl-terephthalic acid, naphthalene 1 : 4-dicarboxylic acid, naphthalene 2 : 6-dicarboxylic acid and diphenyl 4 : 41-dicarboxylic acid respectively.  In place of the sodium salt of an aromatic dicarboxylic acid as starting material, reaction mixtures which yield such salts may be used, such as a mixture of the dicarboxylic acid anhydride and sodium carbonate. The starting material may also contain inert substances such as stone or porcelain balls, sand, metal powders, turnings or fragments or coke or inert salts such as sodium carbonate, sulphate or chloride or potassium sulphate.  Catalysts such as zinc or lead or their oxides, or iron oxide or manganese oxide or salts of these heavy metals with organic acids may be used.  The process may be conducted in the absence of moisture and oxygen and in the presence of an inert gas such as carbon dioxide or nitrogen under atmospheric or increased pressure and may be effected by heating the starting material with stirring, or without agitation in thin layers, the available reaction space being divided by horizontal and/or vertical partitions of metal.  The aromatic carboxylic acids may be isolated by acidification of an aqueous solution of the sodium salt obtained from the heating step and the precipitated acids purified by known methods such as recrystallization, sublimation or distillation of their esters. Derivatives such as esters, halides or amides may be prepared from the sodium salts obtained as product of the heating step.  In examples: (1) dry disodium phthalate is heated in a CO2 atmosphere under pressure, the product dissolved in water, acidified, and the precipitated acid repeatedly extracted with hot water to yield terephthalic acid as residue and benzoic acid from the mother-liquors; (2) phthalic anhydride, sodium carbonate and iron oxide (Fe2O3) are heated with stirring under pressure of CO2 to yield terephthalic acid, benzoic acid and trimesic acid after working up as in (1).
Patent GB-173527-A (GB)
Title: A system of pole changing for polyphase induction motors
IPC: H02K17/14
Filed: 1921-12-30
Abstract: 173,527. Blßthy, O. T. June 8, 1920, [Convention date]. Addition to 161,973. Motors, controlling.-In a polyphase induction motor two speeds are obtained by arranging the stator winding so as to give either a three-phase 10t pole winding or a two-phase 12n pole winding. The winding is similar to that described in the parent Specfication, in which in the threephase connection a coil is provided for each pole and every coil of one phase overlaps two coils in each of the other two phases. In the present invention in changing from the three-phase 70n pole arrangement to the two-phase 12n pole arrangement two adjacent coils in each group of five consecutive coils in each of the three phases, e.g. A<1>, A<2>, B<1>, B<2>, C<1>, C<2>, Fig. 2, are connected in one phase in the two-phase arrangement, all the remaining coils being connected in the other phase. The two coils selected from each of the three phases are those which just overlap the coils selected from the other phases. If the number of poles of the three-phase winding is 20n, the winding can be changed either to a 30n pole twophase winding as described in the parent Specification, or to a 24n pole two-phase winding according to the present invention.
Patent GB-379180-A (GB)
Title: Improvements in or relating to electrical switches of the push button type
IPC: H01H3/20
Filed: 1931-12-18
Abstract: 379,180. Retractive switches. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.- Assignees of Evans, C. T. ; Wauwatosa, Wisconsin, U.S.A.) Dec. 18, 1931, No. 35100. Convention date, Dec. 19, 1930. [Class 38 (v).] The pushbutton 13 of a retractive switch is surrounded by a locking ring 15 extending through the cover 16 and held in position by lugs 22 on a metal ring. On rotating the corrugated grip portion 17 cam surfaces 24 on the ring ride over shoulders 25 on the pushbutton causing it to be depressed until the shoulders rest against flat portions of the cams when the pushbutton is locked in its intermediate position. The pushbutton may be operated directly by hand and makes contact in its upper and in its fully depressed position.
Patent GB-1514874-A (GB)
Title: Diphenols monoalkyl ethers of diphenols and method for manufacture of monoalkyl ethers of diphenols
IPC: C07C67/00
Filed: 1976-08-24
Abstract: 1514874 Preparation of a diphenol or a monoether of a diphenol AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY and MITSUI TOATSU CHEMICALS Inc 24 Aug 1976 [28 Aug 1975] 35208/76 Heading C2C A diphenol or a monoether of a diphenol having the hydrogen atom of one hydroxy group thereof substituted with an alkyl group, a phenylalkyl group or an alkylphenyl group of 1 to 12 carbon atoms is obtained by subjecting at least one compound selected from a compound represented by the formula wherein R is selected from a hydrogen atom, or a C 1-12  alkyl group, and a compound represented by the formula wherein R<SP>1</SP> is selected from an alkyl group, a phenylalkyl group or a C 1-12  alkylphenyl group, to oxidation with at least one organic per acid selected from performic acid, peracetic acid, perpropionic acid, perbutyric acid, perisobutyric acid, permonochloroacetic acid, pertrichloroacetic acid, pertricholroacetic acid and perbenzoic acid in the presence of at least one catalyst selected from acetyl acetone and acetonyl acetone. The following compounds are prepared in the examples: Pyrocatechol, Hydroquinone, 3- or 4-Methyl-1,2-dihydroxybenzene, 2- or 3-Methyl-1,4-dihydroxybenzene, p-t-Butylcatechol, p-t-Octylcatechol, Pyrocatechol monomethyl ether, Hydroquinone monoethylether, and o-Phenoxyphenol.
Patent GB-441902-A (GB)
Title: Improvements in or relating to wire-drawing machines
IPC: B21C1/04
Filed: 1934-12-08
Abstract: 441,902. Drawing wire. BARRON, C. A., Eldon Street, Preston, Lancashire. Dec. 8, 1934, No. 35306. [Class 83 (iv)] Wire is drawn and wound on a drum i by a die or dies revolving in a circular path about the stationary drum. A die j is supported adjacent the drum i on the end face of a sleeve member d which is rotated by a belt f engaging a pulley e. The wire W passes through aligned openings e<1>, d<1> and over pulleys m, k before passing through the die and over the drum i. Catches o are slidable radially in guides in the stationary plate n, and engage internal teeth t in part of the casing p to hold the plate n, shaft h, and drum i against rotation. Each catch is moved in turn from engagement with the teeth t to allow passage of the wire by a cam r engaging grooves in the catches o. According to the Provisional Specification the disc e is driven by toothed gearing.